<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        #box{
            font-size: 24px!important;
            color: blue;
        }
        p{
            font-size: 12px;
            color: yellow;
        }
        .txt{
             font-size: 16px;
             color: red;
         }
    </style>
</head>
<body>

    <div id="box">
        <p class="txt">哈哈</p>
    </div>




<script>
    var point={
        x:0,
        moveTo: function (x) {
            var moveX = function (x) {
                this.x=x;
            };
            moveX(x);
            console.log(this);
        }
    };
    point.moveTo(20);
</script>
</body>
</html>